nushell/crates/nu-command/tests/commands/for_.rs
JT 451a9c64d3
Change echo to print when not redirected (#10338)
# Description

This changes `echo` to work more closely to what users of other shells
would expect:

* when redirected, `echo` works as before and sends values through the
pipeline
* when not redirected, `echo` will print values to the screen/terminal

# User-Facing Changes

A standalone `echo` now will print to the terminal, if not redirected.

The `echo` command is no longer const eval-able, as it will now print to
the terminal in some cases.

# Tests + Formatting
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- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library

> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
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# After Submitting
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2023-09-13 06:35:01 +12:00

43 lines
954 B
Rust

use nu_test_support::nu;
#[test]
fn for_doesnt_auto_print_in_each_iteration() {
let actual = nu!("
for i in 1..2 {
$i
}");
// Make sure we don't see any of these values in the output
// As we do not auto-print loops anymore
assert!(!actual.out.contains('1'));
}
#[test]
fn for_break_on_external_failed() {
let actual = nu!("
for i in 1..2 {
print 1;
nu --testbin fail
}");
// Note: nu! macro auto replace "\n" and "\r\n" with ""
// so our output will be `1`
assert_eq!(actual.out, "1");
}
#[test]
fn failed_for_should_break_running() {
let actual = nu!("
for i in 1..2 {
nu --testbin fail
}
print 3");
assert!(!actual.out.contains('3'));
let actual = nu!("
let x = [1 2]
for i in $x {
nu --testbin fail
}
print 3");
assert!(!actual.out.contains('3'));
}